Electrolytic electricity meter



' Oct. 20,1925. I

M. GROSSMANN ELECTROLYTIC ELECTRICITY METER Filed July 29; 1923 Fig. 2

Fig.4

To all whom it mayconcern:

Be it knownthat'I, MAX GRossMANN, a

citizen of Germany, and residing at J ena,

Germany, have invented a new and useful 6 Electrolytic Electricity Meter-'(forwhich 'I '7 have filed an application in" Germany,

August 17, 1922) of'which the following "is a 'specification. Y

1 In order to avoid that in'electrolytic'elecgold beaters skin) or clay have been thought of for this purpose; All these substances, however, can only be fixed in an unreliable T 9 way on the glass body'of' the meter since it is impossible to fuse them'on. Moreover, it is not advisable to fuse up a glass body havi "ing a partition-wall of an organic substance after the insertion of"this'fpartition-wall be- 12 ause thereby the latter would be endangered, however, without fusing up it is -impossible to achievepermanently reliable closure. Besides, organic substances are not I s 'sufliciently resistant to the concentrated mer- "f3 curygsalt-solutions to be used in this case.

I According to the presentinvention the parh titionwall is made, of fritted glass i. e. a a 1'' body consisting of glass particles which are but lightly fused together and which body is therefore 'porous. 'The porosity can t-that c a-sebe determined in the' desired Way I by the selection of the size of the glass par: ticles from which one starts e. the; fine H nessof the glass-powder or of the glass wool used); besides, it is possible to'select within wide limits the thickness of the par tition-wall and consequently its effect. Such a partition-wallcan be fixed in athoroughly' reliable way on the body of the meter by 5 meansof fusing it on and nothing may prevent the closing of thef'body by having 1t;

fused up. 7 p I g V v v Inxthe'annexed' drawing, Figs: 1, 2, and 3,

, respectively illustrate the inventionby three [150, constructional examples, showing 'a longitudinal section each through the upper part o'fithebody of a meter. 7 e

- In the example shown'in 'Fig. l a small basin 0 of'fritted glass'islfusedfby its marxglnlntO the-glass body I). of the meter filled with the electrolyte a. The anode is formed by the mercury d contained in this basin and lnto which projects a leading-ini wire e *In the [bottom part ofithe body]; the Jil i: The basin 0 is not entirely filled with mer '1 cury and consequentlythespecificallyheaveh i, iersolution,formedabove the mercury with cathode f is fixed one-a leading-i 'j i a2 the electrolysis, can pass in the upper part of the basin 0 through the fritted glass and get to the cathode f, whilst, on thelother, hand the solution, which owing toth'e'libera- ,7 V t1on"from the mercuryhas become s ecie cally lighter, can also upwardly -difi'use; I

Moreover, the part off-the basin covered by through the upper part of the basin 0 the mercury also afiordsthe possibility of conveying the mercury ions fromthe anode 1 vessel into the cathode vessel sincefowing to the surfacete'nsion of the mercury thereaex ists, a possibility of the solutionpassing 1 through between the mercury and the basin. Apipe g, leading from thecathode vessel into the anode vessel, admits, by tilting over the body,i of reconducting the mercury led 1 intov the measuring tube 6 into the anode vessel; i However, the position of thejorifice of this tube in the anode vessel andjthe'compara-tive'ly small diameter of"'this orifice render it almostimpossi'ble that in the work- 'ing position (shown in the drawing) of the meter mercury might be thrown by pushes from the anode vessel into the cathode vessel.

In' the example shown in Fig. 2 there is used instead of a small fbasin a plane plate as.

ofrfritted glass which is fused in an oblique position and not entirely covered by the mercuryd. Hence also in this case a part of the porous partition-wallremains free from, s.

mercury, thus admitting of the passage of the electrolyte so'far as this passage, does 7 not again-take place below the mercury.

In order to provide a still greater security against'part of the mercury being thrown into the cathode vessel, the reconducting pipe;

g is surrounded by a check-ring 9 and the wall of the body I) provided with a'checkis surface 6 The.exampleshown 'inFig.3 substantial- 1y differs from that shown in Fig. 2 only by the feature that the. partition-wall is V formed by an upwardly curved plate 0 of fritted glass, Whose middle part is not covered by thenwrcer I claim: r

1. In an electrolytic electricity meter an anode vessel, a liquid anode, a cathode vessel below the" anode vessel and corniiiiini eating with it, the anode vessel and the cathode vessel adjoining each otherli n a consisting of fritted g1ass, a solid cathode, and an electrolyte contained in vessels.

2. In an electrolytic electricity meter an anode vessel, liquid anode, a cathode vesl he m? t an v s e and comm catin "with it, the anode vessel and the catho" e vessel consisting of glass and adjoining each other in a Wall consisting of {rifled-" lass, which Wall isfused onthe'said two'vessels, a solid cathode, and an electroite eeetained n both vessels MAX GROSSMANN. 

